Eugenics is the practice or advocacy of improving the human species by selectively mating people with specific desirable hereditary traits. It aims to reduce human suffering by “breeding out” disease, disabilities and so-called undesirable characteristics from the human population. Early supporters of eugenics believed people inherited mental illness, criminal tendencies and even poverty, and that these conditions could be bred out of the gene pool.​

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Historically, eugenics encouraged people of so-called healthy, superior stock to reproduce and discouraged reproduction of the mentally challenged or anyone who fell outside the social norm. Eugenics was popular in America during much of the first half of the twentieth century, yet it earned its negative association mainly from Adolf Hitler’s obsessive attempts to create a superior Aryan race.​

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Modern eugenics, more often called human genetic engineering, has come a long way—scientifically and ethically—and offers hope for treating many devastating genetic illnesses. Even so, it remains controversial.​

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(taken from: history.com)

Dorian has tired of posing and insists on going out into the garden where the conversation 

between him and Sir Henry continues. 

‘…you have the most marvellous youth, and youth is the one thing worth having.’ 

’I don’t feel that, Lord Henry.’ 

’No you don’t feel it now. Some day, when you are old and wrinkled and ugly, when thought has seared your forehead with its lines, and passion branded your lips with its hideous fires, you will feel it, you will feel it terribly. Now, wherever you go, you charm the world. Will it always be so? … You have a wonderfully beautiful face, Mr. Gray. Don’t frown. You have. And beauty is a form of genius— is higher, indeed, than genius, as it needs no explanation. It is of the great facts of the world, like sunlight, or spring-time, or the reflection in dark waters of that silver shell we call the moon. It cannot be questioned. It has its divine right of. It makes princes of those who have it. You smile? Ah! when you have lost it you won’t smile…People say sometimes that beauty is only superficial. That may be so, but at least it is not so superficial as thought is. To me, beauty is the wonder of wonders. It is only shallow people who do not judge by appearances. The true mystery of the world is the visible, not the invisible… Yes, Mr. Gray, the gods have been good to you. But what the gods give they quickly take away. You have only a few years in which to live really, perfectly, and fully. When your youth goes, your beauty will go with it, and then you will suddenly discover that there are no triumphs left for you, or have to content yourself with those mean triumphs that the memory of your past will make more bitter than defeats. Every month as it wanes brings you nearer to something dreadful. Time is jealous of you, and wars against your lilies and your roses. You will become sallow, and hollow-cheeked, and dull-eyed. You will suffer horribly.... Ah! realize your youth while you have it. Don’t squander the gold of your days, listening to the tedious, trying to improve the hopeless failure, or giving away your life to the ignorant, the common, and the vulgar. These are the sickly aims, the false ideals, of our age. Live! Live the wonderful life that is in you! Let nothing be lost upon you. Be always searching for new sensations. Be afraid of nothing… A new Hedonism— that is what our century wants. You might be its visible symbol. With your personality there is nothing you could not do. The world belongs to you for a season… The moment I met you I saw that you were quite unconscious of what you really are, of what you really might be. There was so much in you that charmed me that I felt I must tell you something about yourself. I thought how tragic it would be if you were wasted. For there is such a little time that your youth will last—such a little time. The common hill-flowers wither, but they blossom again. The laburnum will be as yellow next June as it is now. In a month there will be purple stars on the clematis, and year after year the green night of its leaves will hold its purple stars. But we never get back our youth. The pulse of joy that beats in us at twenty becomes sluggish. Our limbs fail, our senses rot. We degenerate into hideous puppets, haunted by the memory of the passions of which we were too much afraid, and the exquisite temptations that we had not the courage to yield to. Youth! Youth! There is absolutely nothing in the world but youth!’ 

Dorian Gray listened, open-eyed and wondering. 

O. Wilde, The Picture of Dorian Gray. Chapter 2.